The last thing that's missing from the tango theme - good klaptop icons. These icons are all in the Tango style, some of them from the Tango Desktop Project, some by Marcin Biernat aka boskicinek of BC Tango fame, both under the CC BY-SA license.
1. Unpack the .tar.gz to a temporary folder.
2. Right click the klaptop daemon and select "Configure Klaptop...".
3. Click on each icon and replace with the icon from the temporary folder.